如题所述
第1个回答 2022-10-26
(99+1)×78=7800,10,(99+1)x78,2,99X78+78
=99X78+1X78
=(99+1)X78
=100X78
=7800,2,(100)*78,0,99X78十78=78X99十78X1=78X(99十1)=7800,0,
=99X78+1X78
=(99+1)X78
=100X78
=7800,2,(100)*78,0,99X78十78=78X99十78X1=78X(99十1)=7800,0,